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Finding the Fourth Proportional to 209,573.73, 288,660.81 and 161,082.93

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Solution

The fourth proportional to 209,573.73, 288,660.81 and 161,082.93 is: 221,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,573.73 : 288,660.81 = 161,082.93 : x
  2. Step 2: Convert to fraction form
    209,573.73/288,660.81 = 161,082.93/x
  3. Step 3: Cross multiply
    209,573.73x = 288,660.81 × 161,082.93
  4. Step 4: Simplify right side
    209,573.73x = 46,498,329,113.80
  5. Step 5: Solve for x
    x = 46,498,329,113.80/209,573.73
  6. Step 6: Final answer
    x = 221,870.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.